Machine for rolling car-coupling pins



(No Model.) 1

C. H. WILLIAMS.

MACHINE FOR BOLLING CAR GOUPLING PINS. V

No. 251,328. PateedDec. 20,1881.

llllllllllJllllHljlIMlll]W ll UNITED STATES,

PATENT OFFICE.

CHARLES H. WILLIAMS, OF GLEVELAND, OHIO.

MACHINE FOR ROLLING CAR-COUPLlNG PINS.

SPECIFICATION forming part of Letters Patent No. 251,328, dated December 20, 1881.

Application filed July 5, 1881.

To all whom 'it may concern:

Be it known that I, CHARLES H. WILLIAMS, a citizen of the United States of America, residing at Cleveland, in the couuty of Guyahoga and State of Ohio, have inveuted certain new and useful Improvements in Machines for Rolling Oar-0oupling Pius; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

The object of my invention is to simplify and cheapen the construction of car-coupling pins and to do this I have two general objects in view: first, to make a car-couplingpiu of such form of head as will answer the purpose and more readilyconform to die-rolling, and to construct such a die whereby the metal contained in a bar of the desired form for the shank of a pin can be made to produce such a head as will answer. the purpose with the greatest consistent economy of metal. v

Figure 1 is a front view of a pair of rolls for making car-coupling pins of the form hereinafter described. Fig. 2 is a cross-section view of the same through the dies. Fig. 3 is aperspective view of one of the dies. Fig. 4 is au edge view of a car-coupling pin such as I make with my rolls and dies. Fig. 5 is a side View of the pin shown in Fig. 4. Fig. 6 is a perspective view of the pin shown in Figs. 4 and 5. Fig. 7 is a cross-section view of a round bar of iron or shank of the finished pin. Fig. 8 is a orosssection of a bar of iron (or shank of a pin) such as I may make from the round, as shown in Fig. 7, to produce a pin such as shown in Fig. 10 in one. operationin the groove s. The dotted line represents a cylindrical bar from which this bar is formed. Fig. 9 is a cross-section of a pin such as shown in Figs. 4, 5, 6, from a to a, looking toward the shank of the pin. Fig. 10 is an upright perspective view of a pin having a head like that shown:

in Figs. 4, 5, 6, and 9, but having a shank of a form in cross-section as shown in Fig. 8.

A A indicate a pairof rolls, carryingon their faces grooves and dies, and held in bearings in a suitable housing, B, and geared in the usual manner. These rolls are provided with (No model.)

two or more registering dies, C. Around the rolls, and in line with the dies C O, is agroove, d. I also make in the faces of the rolls grooves h and s, the former for rolling a round bar and the latter for rolling pins having their shanks of the form shown in Fig. 8, which is done by reducing the bar from the round, and heading by using the dies O G inserted in the grooves s.

The shank of my pin is represented by the letter D and the head by the letter E. The base of the head is oval; and a a indicate the shoulders or projections which serve to support the pin in the draw-bar of a car. The shoulder of the shank at x, it will be observed, is abrupt or cut down in nearly straight lines from the shank of the pin, and the die forms this and gives the oval at a a by the construction shown at a'.

The dies C (J are made separate from the rolls, and are held in position therein by bolts Z, which can be couutersunk and placed in any convenient position in the rolls or dies.

In Fig. 3 I have shown the front or face of oneof the dies C cut away at the portion where the shoulders a a are made, to show clearly the form of the concavity ot' the die at a', as the head of the pin lies therein. The die, after leaving the part where the lugs or shoulders are formed, slowly but gradually contracts, as at b. (Shown 'in Fig. 5.) From this point the die is gradually enlarged, as at c' in the die or c on the pin. Igenerallypartly form thepoiut ofa pin with the dies G by chamfering the end on two sides, thus imparting to the end au oval form, as shown' by the pin at g, thus leaving the pointin a convenient form to be completed in the opposite direction by the act of severing. The head in the case of this pin is formed by the direct lateral spread of the metal, and with but slight perceptible elongation or longitudinal draft. This important feature is the grand object 1 have in viewin making my pin of the form shown-that is to say, so that the dies will operate' upon the metal in a natural and easy manner; and I want it understood that the shape of the pin I make is not given with a view to improve the construction of the pin, (although the pin willanswer every purpose,) but to allow of an iinproved construction of die; and-it willbe seen at a glance by any one skilled in the art of working metal that the desired object is ac- IOO ccmplished in the dies herein described, and that the Well-known principles of Working metal have been strictly conformed to.

What I claim, and desire to secure by Letters Patent, is

The die-blocks O, having the concavities a' for forming the shoulders a on the pin and leaving them oval in section, the oval contracted concavities b', and the oval enlarged concavities c'. all constructed substantially as described and shown.

In testimony whereof I have affixed my signature in the presence of two witnesses.

CHARLES H. WILLIAMS.

Witnesses:

J. W. HAMILTON J oHNsoN, A. E. H. J OHNSON. 

